GPS is stuck at my old place

[hirntot]

Describe the bug
I moved to another place. but since I also moved my computer and all my devices, also the wifi is called the same (tough it's not the same router anymore).
Now, living here for half a year, I was annoyed by the GPS always showing my old home location with pretty good accuracy. Checked out microG location Modules and the Mozilla Location Service seems to be quite certain that my actual location is... well... 470km away. all the other nlp services I used didn't find anything, so when disabling Mozilla Location Service, there is no GPS at all (at least inside my appartment).

Screenshots

System

Android Version: Android 11 (Samsung Galaxy S10)
Android Version: Android 12 (Fairphone)
Custom ROM: /e/OS (microG preinstalled)
Both devices have the same problem.

Additional context
well, I can't really add screenshots of my location without crossing some privacy lines...